Can't Connect to my own server

Hey guys I’m having a huge problem I made a Garry’s mod server and my friends can join but I can’t I’ve tried EVERYTHING please help

forwards your ports

Does the IP you’re connecting contain 192.168? If so, you need to forward your ports (Google the tutorial, it’s on Facepunch) and find your real, external IP address, the ones other clients use to communicate with you.

Also, connect through the LAN section of the “Play Multiplayer” section. You might also want to type this in console to test if you can connect to yourself:

connect (or whatever port you have)